gst-trick-mode-looping-2.py: cleanups

diff --git a/python/gst-trick-mode-looping-2.py b/python/gst-trick-mode-looping-2.py
index 7b6b07c..b3487dc 100755 (executable)
--- a/python/gst-trick-mode-looping-2.py
+++ b/python/gst-trick-mode-looping-2.py
@@ -47,19 +47,10 @@ class Player:
         self._player.set_property("uri", self._uri)
 
         # XXX After the first iteration of the loop the playback rate is
-        # reset to normal. Do I need to re-set the rate here?
+        # reset to 1. Do I need to re-set the rate here?
 
         # If I uncomment the following line, nothing changes:
-        #self.set_rate(self._rate)
-
-        # And nothing changes either if I set the seek_event manually using
-        # position=0:
-        #seek_event = Gst.Event.new_seek(self._rate,
-        #                                Gst.Format.TIME,
-        #                                Gst.SeekFlags.FLUSH | Gst.SeekFlags.ACCURATE,
-        #                                Gst.SeekType.SET, 0,
-        #                                Gst.SeekType.NONE, 0)
-        #self._player.send_event(seek_event)
+        #self.set_seek(0)
 
     def on_error(self, bus, msg):
         (err, debug) = msg.parse_error()
@@ -79,19 +70,32 @@ class Player:
     def set_rate(self, rate):
         self._rate = rate
         position = self._player.query_position(Gst.Format.TIME)[1]
+        self.set_seek(position, True)
+
+    def set_seek(self, position, flush=False):
+        flags = Gst.SeekFlags.SKIP | Gst.SeekFlags.ACCURATE
 
-        # Create the seek event
-        seek_event = Gst.Event.new_seek(rate,
-                                        Gst.Format.TIME,
-                                        Gst.SeekFlags.FLUSH | Gst.SeekFlags.ACCURATE,
-                                        Gst.SeekType.SET, position,
-                                        Gst.SeekType.SET, -1)
+        if flush:
+            flags |= Gst.SeekFlags.FLUSH
+
+        if self._rate >= 0:
+            seek_event = Gst.Event.new_seek(self._rate,
+                                            Gst.Format.TIME,
+                                            flags,
+                                            Gst.SeekType.SET, position,
+                                            Gst.SeekType.NONE, 0)
+        else:
+            seek_event = Gst.Event.new_seek(self._rate,
+                                            Gst.Format.TIME,
+                                            flags,
+                                            Gst.SeekType.NONE, 0,
+                                            Gst.SeekType.END, position)
 
         if seek_event:
             self._player.send_event(seek_event)
-            Gst.info("rate set to %s" % rate)
+            Gst.info("rate set to %s" % self._rate)
         else:
-             Gst.warining("change rate failed")
+            Gst.warining("change rate failed")
 
 
 def main(args):