[banshee] gst#: Only handle state-changed messages from the playbin.

[Bertrand Lorentz <blorentz src gnome org>]

commit a8a36470012a4d5e4bd498947d2078bd4b571d04
Author: Christopher James Halse Rogers <chrishr src gnome org>
Date:   Sun May 15 00:28:00 2011 +0200

    gst#: Only handle state-changed messages from the playbin.
    
    OnBusMessage gets state-changed messages from everything in
    the playbin, but we're only interested in the overall state
    of the bin.  Only process messages from the playbin to cut
    out all the superfluous state changes.

 .../Banshee.GStreamerSharp/PlayerEngine.cs         |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)
---
diff --git a/src/Backends/Banshee.GStreamerSharp/Banshee.GStreamerSharp/PlayerEngine.cs b/src/Backends/Banshee.GStreamerSharp/Banshee.GStreamerSharp/PlayerEngine.cs
index 75b8e3d..feadc8f 100644
--- a/src/Backends/Banshee.GStreamerSharp/Banshee.GStreamerSharp/PlayerEngine.cs
+++ b/src/Backends/Banshee.GStreamerSharp/Banshee.GStreamerSharp/PlayerEngine.cs
@@ -103,9 +103,11 @@ namespace Banshee.GStreamerSharp
                     break;
 
                 case MessageType.StateChanged:
-                    State old_state, new_state, pending_state;
-                    msg.ParseStateChanged (out old_state, out new_state, out pending_state);
-                    HandleStateChange (old_state, new_state, pending_state);
+                    if (msg.Src == playbin) {
+                        State old_state, new_state, pending_state;
+                        msg.ParseStateChanged (out old_state, out new_state, out pending_state);
+                        HandleStateChange (old_state, new_state, pending_state);
+                    }
                     break;
 
                 case MessageType.Buffering: