Motion capture: profile support, FPS config, persistent tracking, window state

Profile integration:
- CameraDevice.get_save_config() serialises camera_index, simulate,
  resolution, fps — cameras now persist in .labdaq profiles
- ProfileManager.register/unregister_device_factory() lets plugins
  register their device classes for profile restoration without
  core → plugin dependency
- MotionCapturePlugin registers CameraDevice factory on load/unload

Camera configuration:
- Add Frame Rate combo to CameraPanel (Default/15/24/30/60/120 fps)
  defaults to 30 fps; flows through to CAP_PROP_FPS on connect
- tracker.start() accepts fps param alongside existing resolution

Tracking persistence:
- CameraTracker.is_running() — checks thread alive state
- MotionCaptureWindow initialises _connected from tracker.is_running()
  so reopening the window resumes the live feed without restarting
  the camera or losing the active tracking state

Window state:
- Plugin saves px_per_mm + camera_idx when window closes
- Reopened window restores saved values and syncs mode/shape UI
  from tracker state via restore_ui_state() (signals blocked to
  avoid resetting tracker)
- Window type changed to Qt.WindowType.Window for independent
  close button on all Linux WMs

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 16 insertions, 1 deletions

diff --git a/plugins/motion_capture/device.py b/plugins/motion_capture/device.py
index 8eb1591..58f89ce 100644
--- a/plugins/motion_capture/device.py
+++ b/plugins/motion_capture/device.py
@@ -24,10 +24,13 @@ from devices.base_device import (
 
 class CameraDevice(BaseDevice):
 
+    DEVICE_TYPE = "camera"
+
     def __init__(self, device_id: str = "cam_0",
                  camera_index: int = 0,
                  simulate: bool = False,
-                 resolution=None):
+                 resolution=None,
+                 fps=None):
         name = "Camera (Sim)" if simulate else f"Camera {camera_index}"
         super().__init__(DeviceInfo(
             device_id   = device_id,
@@ -57,6 +60,7 @@ class CameraDevice(BaseDevice):
         self._camera_index           = camera_index
         self._simulate               = simulate
         self._resolution             = resolution
+        self._fps                    = fps
         self._tracker: Optional[Any] = None
         self._tracking_win           = None
 
@@ -68,6 +72,7 @@ class CameraDevice(BaseDevice):
         self._tracker.start(
             -1 if self._simulate else self._camera_index,
             resolution=self._resolution,
+            fps=self._fps,
         )
         if self._tracker.simulated:
             self.status = DeviceStatus.SIMULATED
@@ -93,6 +98,16 @@ class CameraDevice(BaseDevice):
         x, y = pos
         return {"x_pos": float(x), "y_pos": float(y)}
 
+    def get_save_config(self) -> dict:
+        return {
+            "device_type":  self.DEVICE_TYPE,
+            "device_id":    self.info.device_id,
+            "camera_index": self._camera_index,
+            "simulate":     self._simulate,
+            "resolution":   list(self._resolution) if self._resolution else None,
+            "fps":          self._fps,
+        }
+
     def write_channel(self, channel_id: str, value: Any) -> bool:
         return False