Add duration to scanner data

mopidy/scanner.py

@@ -71,6 +71,7 @@ class Scanner(object):
         data = message.parse_tag()
         data = dict([(k, data[k]) for k in data.keys()])
         data['uri'] = self.uribin.get_property('uri')
+        data['duration'] = self.get_duration()
         self.data_callback(data)
         self.next_uri()
 
@@ -81,6 +82,13 @@ class Scanner(object):
             self.error_callback(uri, errors)
         self.next_uri()
 
+    def get_duration(self):
+        try:
+            return self.pipe.query_duration(
+                gst.FORMAT_TIME, None)[0] // gst.MSECOND
+        except gst.QueryError:
+            return None
+
     def next_uri(self):
         if not self.uris:
             return self.stop()

tests/scanner_test.py

@@ -73,6 +73,10 @@ class ScannerTest(unittest.TestCase):
         self.check('scanner/simple/song1.mp3', 'uri', 'file://'
             + data_folder('scanner/simple/song1.mp3'))
 
+    def test_duration_is_set(self):
+        self.scan('scanner/simple')
+        self.check('scanner/simple/song1.mp3', 'duration', 4680)
+
     def test_artist_is_set(self):
         self.scan('scanner/simple')
         self.check('scanner/simple/song1.mp3', 'artist', 'name')