feat: camera support, using mpv as backend

it should be able to play any video or stream that mpv itself can handle

close #67 close #129

panels/camera.py

@@ -0,0 +1,85 @@
+import mpv
+import logging
+import gi
+
+gi.require_version("Gtk", "3.0")
+from gi.repository import Gtk, Gdk
+
+from ks_includes.screen_panel import ScreenPanel
+
+
+def create_panel(*args):
+    return CameraPanel(*args)
+
+
+class CameraPanel(ScreenPanel):
+    def __init__(self, screen, title):
+        super().__init__(screen, title)
+        self.mpv = None
+        self.da = Gtk.DrawingArea()
+        self.da.set_hexpand(True)
+        self.da.set_vexpand(True)
+        fs = self._gtk.Button("move", _("Fullscreen"), None, self.bts, Gtk.PositionType.LEFT, 1)
+        fs.connect("clicked", self.play)
+        fs.set_hexpand(True)
+        fs.set_vexpand(False)
+        box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
+        box.add(self.da)
+        box.add(fs)
+        self.content.add(box)
+        self.content.show_all()
+        self.url = self.ks_printer_cfg.get("camera_url", "http://127.0.0.1/webcam/?action=stream").replace('"', '')
+        logging.debug(f"Camera URL: {self.url}")
+        # wayland has no primary monitor with that we can detect it
+        self.wayland = Gdk.Display.get_default().get_primary_monitor() is None
+        # gpu output driver doesn't work on a pi3 and the autoselected sdl doesn't size correctly
+        # consider adding a software switch to enable the gpu backend if set by the user
+        self.vo = 'x11' if self.wayland else 'wlshm'
+
+    def activate(self):
+        self.play()
+
+    def deactivate(self):
+        if self.mpv:
+            self.mpv.terminate()
+            self.mpv = None
+
+    def play(self, fs=None):
+        # Create mpv after show or the 'window' property will be None
+        self.mpv = mpv.MPV(
+            log_handler=self.log,
+            vo=self.vo,
+            profile='sw-fast',
+        )
+        # On wayland mpv cannot be embedded at least for now
+        # https://github.com/mpv-player/mpv/issues/9654
+        if fs or self.wayland:
+            self.mpv.fullscreen = True
+
+            @self.mpv.on_key_press('MBTN_LEFT' or 'MBTN_LEFT_DBL')
+            def clicked():
+                self.mpv.quit(0)
+        else:
+            self.mpv.wid = f'{self.da.get_property("window").get_xid()}'
+
+            @self.mpv.on_key_press('MBTN_LEFT' or 'MBTN_LEFT_DBL')
+            def clicked():
+                self._screen.show_popup_message(self.url, level=1)
+        self.mpv.play(self.url)
+        if fs or self.wayland:
+            try:
+                self.mpv.wait_for_playback()
+            except mpv.ShutdownError:
+                logging.info('Exiting Fullscreen')
+            except Exception as e:
+                logging.exception(e)
+            self.mpv.terminate()
+            self.mpv = None
+            if self.wayland:
+                self._screen._menu_go_back()
+            else:
+                self.play()
+
+    @staticmethod
+    def log(loglevel, component, message):
+        logging.debug(f'[{loglevel}] {component}: {message}')