core: added imageCheck and imageResize methods:

imageCheck will give a report on image, notably it will tell if it's too big and needs to
be resized before a transfer.

imageResize will create a new image with the requested size and return a path to it.

sat/bridge/bridge_constructor/bridge_template.ini

@@ -909,3 +909,24 @@ sig_in=
 sig_out=a{ss}
 doc=Get a dict to short name => whole namespaces
 doc_return=namespaces mapping
+
+[imageCheck]
+type=method
+category=core
+sig_in=s
+sig_out=s
+doc=Analyze an image a return a report
+doc_return=serialized report
+
+[imageResize]
+async=
+type=method
+category=core
+sig_in=sii
+sig_out=s
+doc=Create a new image with desired size
+doc_param_0=image_path: path of the image to resize
+doc_param_1=width: width of the new image
+doc_param_2=height: height of the new image
+doc_return=path of the new image with desired size
+    the image must be deleted once not needed anymore

sat/bridge/dbus_bridge.py

@@ -384,6 +384,18 @@ class DbusObject(dbus.service.Object):
     def historyGet(self, from_jid, to_jid, limit, between=True, filters='', profile="@NONE@", callback=None, errback=None):
         return self._callback("historyGet", str(from_jid), str(to_jid), limit, between, filters, str(profile), callback=callback, errback=errback)
 
+    @dbus.service.method(const_INT_PREFIX+const_CORE_SUFFIX,
+                         in_signature='s', out_signature='s',
+                         async_callbacks=None)
+    def imageCheck(self, arg_0):
+        return self._callback("imageCheck", str(arg_0))
+
+    @dbus.service.method(const_INT_PREFIX+const_CORE_SUFFIX,
+                         in_signature='sii', out_signature='s',
+                         async_callbacks=('callback', 'errback'))
+    def imageResize(self, image_path, width, height, callback=None, errback=None):
+        return self._callback("imageResize", str(image_path), width, height, callback=callback, errback=errback)
+
     @dbus.service.method(const_INT_PREFIX+const_CORE_SUFFIX,
                          in_signature='s', out_signature='b',
                          async_callbacks=None)