#22 Use BytesIO for camera capture

src/picam/picam1.py

@@ -1,5 +1,6 @@
-from picam import PiCam
+from src.picam import PiCam
 
+from io import BytesIO
 from picamera import PiCamera
 
 class PiCam1(PiCam):
@@ -36,12 +37,17 @@ class PiCam1(PiCam):
     def capture(self, preview: bool = False) -> bytes:
         # Bytes to hold output buffer
         out = bytes()
+        bytes_stream = BytesIO()
 
         if not preview:
             # If preview we'll already have the right resolution
             self.set_camera_resolution(self.capture_resolution)
 
-        self.camera.capture(out, format='rgb', use_video_port=preview)
+        self.camera.capture(bytes_stream, format='rgb', use_video_port=preview)
+
+        bytes_stream.seek(0)
+        bytes_stream.readinto(out)
+        bytes_stream.close()
 
         if not preview:
             # If preview we'll already have the right resolution