Refactor API route setup and enhance modularity

- Consolidated API route definitions by registering routes from separate modules for better organization and maintainability.
- Removed redundant route definitions from the APIServer class, improving code clarity.
- Updated camera monitoring and recording modules to utilize a shared context manager for suppressing camera SDK errors, enhancing error handling.
- Adjusted timeout settings in camera operations for improved reliability during frame capture.
- Enhanced logging and error handling across camera operations to facilitate better debugging and monitoring.

camera-management-api/usda_vision_system/camera/recorder.py

@@ -11,7 +11,6 @@ import time
 import logging
 import cv2
 import numpy as np
-import contextlib
 import queue
 from typing import Optional, Dict, Any
 from datetime import datetime
@@ -26,30 +25,7 @@ from ..core.state_manager import StateManager
 from ..core.events import EventSystem, publish_recording_started, publish_recording_stopped, publish_recording_error
 from ..core.timezone_utils import now_atlanta, format_filename_timestamp
 from .sdk_config import ensure_sdk_initialized
-
-
-@contextlib.contextmanager
-def suppress_camera_errors():
-    """Context manager to temporarily suppress camera SDK error output"""
-    # Save original file descriptors
-    original_stderr = os.dup(2)
-    original_stdout = os.dup(1)
-
-    try:
-        # Redirect stderr and stdout to devnull
-        devnull = os.open(os.devnull, os.O_WRONLY)
-        os.dup2(devnull, 2)  # stderr
-        os.dup2(devnull, 1)  # stdout (in case SDK uses stdout)
-        os.close(devnull)
-
-        yield
-
-    finally:
-        # Restore original file descriptors
-        os.dup2(original_stderr, 2)
-        os.dup2(original_stdout, 1)
-        os.close(original_stderr)
-        os.close(original_stdout)
+from .utils import suppress_camera_errors
 
 
 class CameraRecorder:
@@ -537,7 +513,7 @@ class CameraRecorder:
         """Test if camera can capture frames"""
         try:
             # Try to capture one frame
-            pRawData, FrameHead = mvsdk.CameraGetImageBuffer(self.hCamera, 1000)  # 1 second timeout
+            pRawData, FrameHead = mvsdk.CameraGetImageBuffer(self.hCamera, CAMERA_TEST_CAPTURE_TIMEOUT)
             mvsdk.CameraImageProcess(self.hCamera, pRawData, self.frame_buffer, FrameHead)
             mvsdk.CameraReleaseImageBuffer(self.hCamera, pRawData)
             return True
@@ -686,7 +662,7 @@ class CameraRecorder:
                             continue
                     else:
                         # Capture frame directly from camera
-                        pRawData, FrameHead = mvsdk.CameraGetImageBuffer(self.hCamera, 200)  # 200ms timeout
+                        pRawData, FrameHead = mvsdk.CameraGetImageBuffer(self.hCamera, CAMERA_GET_BUFFER_TIMEOUT)
 
                         # Process frame
                         mvsdk.CameraImageProcess(self.hCamera, pRawData, self.frame_buffer, FrameHead)
@@ -770,7 +746,7 @@ class CameraRecorder:
                 self.logger.info(f"Using frame dimensions from streamer frame: {frame_size}")
             elif self.hCamera:
                 # Get frame dimensions by capturing a test frame from camera
-                pRawData, FrameHead = mvsdk.CameraGetImageBuffer(self.hCamera, 1000)
+                pRawData, FrameHead = mvsdk.CameraGetImageBuffer(self.hCamera, CAMERA_INIT_TIMEOUT)
                 mvsdk.CameraImageProcess(self.hCamera, pRawData, self.frame_buffer, FrameHead)
                 mvsdk.CameraReleaseImageBuffer(self.hCamera, pRawData)
                 frame_size = (FrameHead.iWidth, FrameHead.iHeight)
@@ -779,7 +755,7 @@ class CameraRecorder:
                 if self.streamer and self.streamer.hCamera:
                     try:
                         with suppress_camera_errors():
-                            pRawData, FrameHead = mvsdk.CameraGetImageBuffer(self.streamer.hCamera, 1000)
+                            pRawData, FrameHead = mvsdk.CameraGetImageBuffer(self.streamer.hCamera, CAMERA_INIT_TIMEOUT)
                             mvsdk.CameraReleaseImageBuffer(self.streamer.hCamera, pRawData)
                             frame_size = (FrameHead.iWidth, FrameHead.iHeight)
                             self.logger.info(f"Got frame dimensions from streamer's camera: {frame_size}")
@@ -798,8 +774,8 @@ class CameraRecorder:
             # Set up video writer with configured codec
             fourcc = cv2.VideoWriter_fourcc(*self.camera_config.video_codec)
 
-            # Use 30 FPS for video writer if target_fps is 0 (unlimited)
-            video_fps = self.camera_config.target_fps if self.camera_config.target_fps > 0 else 30.0
+            # Use default FPS for video writer if target_fps is 0 (unlimited)
+            video_fps = self.camera_config.target_fps if self.camera_config.target_fps > 0 else DEFAULT_VIDEO_FPS
 
             # Create video writer with quality settings
             self.video_writer = cv2.VideoWriter(self.output_filename, fourcc, video_fps, frame_size)
@@ -883,7 +859,7 @@ class CameraRecorder:
                 
                 # Small delay to ensure file system sync
                 import time
-                time.sleep(0.1)
+                time.sleep(BRIEF_PAUSE_SLEEP)
                 
                 # Verify file exists and has content
                 if self.output_filename and os.path.exists(self.output_filename):