Added continous hand tracking

source/UI/SetupPageWidget.py

@@ -4,7 +4,7 @@ import os
 from Tbd.helper import CameraObject
 from UI.UILogger import UILogger
 
-from PySide6.QtCore import Qt, QTimer
+from PySide6.QtCore import Qt, QTimer, QThread, Signal
 from PySide6.QtGui import QImage, QPixmap
 from PySide6.QtWidgets import QLineEdit
 from PySide6.QtGui import QIntValidator
@@ -12,6 +12,35 @@ from PySide6.QtWidgets import QWidget, QLabel, QVBoxLayout, QPushButton, QHBoxLa
 from typing import List
 
 
+class LoadCamerasWorker(QThread):
+    """
+    Opens/verifies/closes each camera off the UI thread - camera.open() does
+    MSMF format negotiation with retries+sleeps, which used to block the Qt
+    event loop (window shows as "Not Responding") for the whole duration.
+    """
+    cameraOpened = Signal(object)
+    logMessage = Signal(str)
+
+    def __init__(self, indexToAdd: List[int]):
+        super().__init__()
+        self.indexToAdd = indexToAdd
+
+    def run(self):
+        for index in self.indexToAdd:
+            camera = CameraObject(capture=None, index=index)
+
+            if not camera.open():
+                self.logMessage.emit(f"cam{index}: failed to open, skipping.")
+                continue
+
+            ret, frame = camera.capture.read()
+            if ret:
+                self.logMessage.emit(f"cam{index}: verified, frame shape={frame.shape}")
+            else:
+                self.logMessage.emit(f"cam{index}: opened but failed to read a frame.")
+
+            camera.close()
+            self.cameraOpened.emit(camera)
 
 
 class SetupPage(QWidget):
@@ -91,31 +120,22 @@ class SetupPage(QWidget):
             self.logger.log("Path not found")
 
         indexToAdd = [1, 2, 3, 4, 5, 6]
-
+        #indexToAdd = [0, 3]
         # Cameras are verified one at a time and left closed afterwards - this
         # hardware can't sustain many concurrent capture graphs (confirmed via
         # both CAP_DSHOW and a raw DirectShow graph), so callers open a camera
         # right before they need it (CameraSetupWidget.Start, calibration capture)
         # and close it right after, instead of keeping all 6 open simultaneously.
-        for index in indexToAdd:
-            camera = CameraObject(capture=None, index=index)
+        self.loadBTN.setEnabled(False)
+        self._loadWorker = LoadCamerasWorker(indexToAdd)
+        self._loadWorker.logMessage.connect(self.logger.log)
+        self._loadWorker.cameraOpened.connect(self._onCameraLoaded)
+        self._loadWorker.finished.connect(lambda: self.loadBTN.setEnabled(True))
+        self._loadWorker.start()
 
-            if not camera.open():
-                self.logger.log(f"cam{index}: failed to open, skipping.")
-                continue
-
-            ret, frame = camera.capture.read()
-            if ret:
-                self.logger.log(f"cam{index}: verified, frame shape={frame.shape}")
-            else:
-                self.logger.log(f"cam{index}: opened but failed to read a frame.")
-
-            camera.close()
-
-            self.cameraList.append(camera)
-            self._cameraList_changed()
-
-        return
+    def _onCameraLoaded(self, camera: CameraObject):
+        self.cameraList.append(camera)
+        self._cameraList_changed()