Fixes (#20254)

* fix api async/await functions

* fix synaptics detector from throwing error when unused

* clean up

frigate/detectors/plugins/synaptics.py

@@ -2,10 +2,6 @@ import logging
 import os
 
 import numpy as np
-from synap import Network
-from synap.postprocessor import Detector
-from synap.preprocessor import Preprocessor
-from synap.types import Layout, Shape
 from typing_extensions import Literal
 
 from frigate.detectors.detection_api import DetectionApi
@@ -15,6 +11,16 @@ from frigate.detectors.detector_config import (
     ModelTypeEnum,
 )
 
+try:
+    from synap import Network
+    from synap.postprocessor import Detector
+    from synap.preprocessor import Preprocessor
+    from synap.types import Layout, Shape
+
+    SYNAP_SUPPORT = True
+except ImportError:
+    SYNAP_SUPPORT = False
+
 logger = logging.getLogger(__name__)
 
 DETECTOR_KEY = "synaptics"
@@ -28,15 +34,21 @@ class SynapDetector(DetectionApi):
     type_key = DETECTOR_KEY
 
     def __init__(self, detector_config: SynapDetectorConfig):
+        if not SYNAP_SUPPORT:
+            logger.error(
+                "Error importing Synaptics SDK modules. You must use the -synaptics Docker image variant for Synaptics detector support."
+            )
+            return
+
         try:
             _, ext = os.path.splitext(detector_config.model.path)
             if ext and ext != ".synap":
-                raise ValueError("Model path config for Synap1680 is wrong.")
+                raise ValueError("Model path config for Synap1680 is incorrect.")
 
             synap_network = Network(detector_config.model.path)
             logger.info(f"Synap NPU loaded model: {detector_config.model.path}")
         except ValueError as ve:
-            logger.error(f"Config to Synap1680 was Failed: {ve}")
+            logger.error(f"Synap1680 setup has failed: {ve}")
             raise
         except Exception as e:
             logger.error(f"Failed to init Synap NPU: {e}")