Miscellaneous fixes (0.18 beta) (#23934)

* add host npu requirements to docs

* allow toggling live audio transcription via mqtt

* improve spacing consistency on mobile drawers

* fix clearing the region grid not surviving a restart

frigate/api/media.py

@@ -53,6 +53,7 @@ from frigate.util.file import (
 )
 from frigate.util.image import get_image_from_recording, get_image_quality_params
 from frigate.util.media import get_keyframe_before
+from frigate.util.object import create_empty_regions_grid
 
 logger = logging.getLogger(__name__)
 
@@ -1083,7 +1084,21 @@ def clear_region_grid(request: Request, camera_name: str):
             status_code=404,
         )
 
-    Regions.delete().where(Regions.camera == camera_name).execute()
+    # store an empty grid instead of deleting the row so the grid is
+    # rebuilt from newly tracked objects and not from all past history
+    region = {
+        Regions.camera: camera_name,
+        Regions.grid: create_empty_regions_grid(),
+        Regions.last_update: datetime.now().timestamp(),
+    }
+    (
+        Regions.insert(region)
+        .on_conflict(
+            conflict_target=[Regions.camera],
+            update=region,
+        )
+        .execute()
+    )
     return JSONResponse(
         content={"success": True, "message": "Region grid cleared"},
     )

frigate/comms/mqtt.py

@@ -77,6 +77,11 @@ class MqttClient(Communicator):
                 "ON" if camera.audio.enabled_in_config else "OFF",
                 retain=True,
             )
+            self.publish(
+                f"{camera_name}/audio_transcription/state",
+                "ON" if camera.audio_transcription.live_enabled else "OFF",
+                retain=True,
+            )
             self.publish(
                 f"{camera_name}/detect/state",
                 "ON" if camera.detect.enabled else "OFF",
@@ -258,6 +263,7 @@ class MqttClient(Communicator):
             "snapshots",
             "detect",
             "audio",
+            "audio_transcription",
             "motion",
             "improve_contrast",
             "ptz_autotracker",

frigate/util/object.py

@@ -35,6 +35,11 @@ logger = logging.getLogger(__name__)
 GRID_SIZE = 8
 
 
+def create_empty_regions_grid() -> list[list[dict[str, Any]]]:
+    """Create a region grid with no learned sizes."""
+    return [[{"sizes": []} for _ in range(GRID_SIZE)] for _ in range(GRID_SIZE)]
+
+
 def get_camera_regions_grid(
     name: str,
     detect: DetectConfig,
@@ -47,12 +52,7 @@ def get_camera_regions_grid(
         grid = regions.grid
         last_update = regions.last_update
     except DoesNotExist:
-        grid = []
-        for x in range(GRID_SIZE):
-            row = []
-            for y in range(GRID_SIZE):
-                row.append({"sizes": []})
-            grid.append(row)
+        grid = create_empty_regions_grid()
         last_update = 0
 
     # get events for timeline entries