services: use asyncio to_thread in moondreamservice

src/dailyai/services/moondream_ai_service.py

@@ -1,3 +1,5 @@
+import asyncio
+
 from dailyai.pipeline.frames import ImageFrame, VisionImageFrame
 from dailyai.services.ai_services import VisionService
 
@@ -43,10 +45,15 @@ def __init__(
         self._model.eval()
 
     async def run_vision(self, frame: VisionImageFrame) -> str:
-        image = Image.frombytes("RGB", (frame.size[0], frame.size[1]), frame.image)
-        image_embeds = self._model.encode_image(image)
-        description = self._model.answer_question(
-            image_embeds=image_embeds,
-            question=frame.text,
-            tokenizer=self._tokenizer)
+        def get_image_description(frame: VisionImageFrame):
+            image = Image.frombytes("RGB", (frame.size[0], frame.size[1]), frame.image)
+            image_embeds = self._model.encode_image(image)
+            description = self._model.answer_question(
+                image_embeds=image_embeds,
+                question=frame.text,
+                tokenizer=self._tokenizer)
+            return description
+
+        description = await asyncio.to_thread(get_image_description, frame)
+
         return description