Implement initial structure and core functionality for Duck Preview application

duck_preview/app.py

@@ -0,0 +1,42 @@
+from __future__ import annotations
+
+import sys
+
+from PySide6.QtCore import QTimer
+from PySide6.QtWidgets import QApplication
+
+from duck_preview.camera.service import CameraService
+from duck_preview.dispatcher.frame_dispatcher import FrameDispatcher
+from duck_preview.main_window import MainWindow
+from duck_preview.rendering.overlay import OverlayWidget
+from duck_preview.rendering.video_widget import VideoWidget
+from duck_preview.telemetry.collector import TelemetryCollector
+
+
+def main() -> None:
+    app = QApplication(sys.argv)
+    app.setApplicationName("Duck Preview")
+
+    camera = CameraService()
+    dispatcher = FrameDispatcher()
+    telemetry = TelemetryCollector()
+    video_widget = VideoWidget()
+    overlay = OverlayWidget()
+
+    camera.sink.videoFrameChanged.connect(dispatcher.on_frame)
+
+    dispatcher.subscribe(telemetry.on_frame)
+    dispatcher.subscribe(video_widget.on_frame)
+
+    window = MainWindow(camera, video_widget, overlay)
+
+    metrics_timer = QTimer()
+    metrics_timer.timeout.connect(lambda: overlay.set_metrics(telemetry.metrics()))
+    metrics_timer.start(200)
+
+    window.show()
+    sys.exit(app.exec())
+
+
+if __name__ == "__main__":
+    main()