[pitivi] SourceFactoryObject: add some debugging statements

[Edward Hervey <edwardrv src gnome org>]

commit 71756e5711da799a6d2fa4426d823156ba6a27bb
Author: Edward Hervey <bilboed bilboed com>
Date:   Fri Jun 12 18:00:21 2009 +0200

    SourceFactoryObject: add some debugging statements

 pitivi/factories/base.py |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/pitivi/factories/base.py b/pitivi/factories/base.py
index bcdc34a..029c258 100644
--- a/pitivi/factories/base.py
+++ b/pitivi/factories/base.py
@@ -236,8 +236,10 @@ class SourceFactory(ObjectFactory):
         self.debug("stream %r", output_stream)
 
         if output_stream is not None:
+            self.debug("output_streams:%r", self.output_streams)
             stream_map = match_stream_groups_map([output_stream], self.output_streams)
             if output_stream not in stream_map:
+                self.warning("stream not available in map %r", stream_map)
                 raise ObjectFactoryError("can not create stream")
 
             compatible_stream = stream_map[output_stream]