[pitivi] formatters.etree: save and restore object factory duration

[Edward Hervey <edwardrv src gnome org>]

commit d28582fd94f4a292d5dd08de149c984c65589287
Author: Brandon Lewis <brandon_lewis berkeley edu>
Date:   Fri Apr 17 23:12:43 2009 -0700

    formatters.etree: save and restore object factory duration
---
 pitivi/formatters/etree.py |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/pitivi/formatters/etree.py b/pitivi/formatters/etree.py
index 01c7656..7116552 100644
--- a/pitivi/formatters/etree.py
+++ b/pitivi/formatters/etree.py
@@ -136,6 +136,8 @@ class ElementTreeFormatter(Formatter):
         element = Element("source")
         element.attrib["id"] = self._new_element_id()
         element.attrib["type"] = qual(factory.__class__)
+        element.attrib["default_duration"] = str(factory.default_duration)
+        element.attrib["duration"] = str(factory.duration)
 
         input_streams_element = SubElement(element, "input-streams")
         input_streams = factory.getInputStreams()
@@ -161,6 +163,9 @@ class ElementTreeFormatter(Formatter):
         else:
             factory = klass()
 
+        factory.duration = long(element.attrib["duration"])
+        factory.default_duration = long(element.attrib["default_duration"])
+
         input_streams = element.find("input-streams") or []
         for stream_element in input_streams:
             stream = self._loadStream(stream_element)