From de55bfa725a5a6d45155cb8f351904c9bf7a0bc4 Mon Sep 17 00:00:00 2001
From: Matthias Vogelgesang <matthias.vogelgesang@kit.edu>
Date: Thu, 10 Sep 2015 10:49:03 +0200
Subject: Fix #74: call grab in a separate thread

---
 tango/Uca | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

(limited to 'tango')

diff --git a/tango/Uca b/tango/Uca
index ed6069e..0438f70 100755
--- a/tango/Uca
+++ b/tango/Uca
@@ -4,6 +4,7 @@ import sys
 import time
 import numpy as np
 import PyTango
+import threading
 from gi.repository import Uca, GObject
 from PyTango import Attr, AttrWriteType, DevState
 from PyTango.server import Device, DeviceMeta, attribute, device_property, command, server_run
@@ -119,12 +120,15 @@ class Camera(Device):
 
     @command(dtype_in=str, doc_in="Path and filename to store frame")
     def Store(self, path):
-        frame = self.grab()
+        def grab_and_write():
+            frame = self.grab()
 
-        if HAVE_TIFFFILE:
-            tifffile.imsave(path, frame)
-        else:
-            np.savez(open(path, 'wb'), frame)
+            if HAVE_TIFFFILE:
+                tifffile.imsave(path, frame)
+            else:
+                np.savez(open(path, 'wb'), frame)
+
+        threading.Thread(target=grab_and_write).start()
 
     @command
     def Trigger(self):
-- 
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