[pitivi] tempfiles: Use a /tmp subdirectory for temporary files.

[Edward Hervey <edwardrv src gnome org>]

commit 539e4f7825488cba1a3d88b62f9432b0cb04dc00
Author: Jan Gerber <j bootlab org>
Date:   Fri Jul 10 13:49:39 2009 +0200

    tempfiles: Use a /tmp subdirectory for temporary files.

 pitivi/discoverer.py |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)
---
diff --git a/pitivi/discoverer.py b/pitivi/discoverer.py
index 2692bb8..5aba1fd 100644
--- a/pitivi/discoverer.py
+++ b/pitivi/discoverer.py
@@ -463,8 +463,15 @@ class Discoverer(Signallable, Loggable):
                 if format == gst.FORMAT_TIME:
                     self.current_duration = duration
 
-    def _getThumbnailFilenameFromPad(self, pad):
+    def _gettempdir(self):
         tmp = tempfile.gettempdir()
+        tmp = os.path.join(tmp, 'pitivi-%s' % os.getenv('USER'))
+        if not os.path.exists(tmp):
+            os.mkdir(tmp)
+        return tmp
+
+    def _getThumbnailFilenameFromPad(self, pad):
+        tmp = self._gettempdir()
         name = '%s.%s' % (self.current_uri, pad.get_name())
         name = urlsafe_b64encode(name) + '.png'
         filename = os.path.join(tmp, name)