[totem] backend: Parse the duration message

[Bastien Nocera <hadess src gnome org>]

commit 7ddfc722b19f3bff4da5521669208433be2b2aed
Author: Bastien Nocera <hadess hadess net>
Date:   Sun Jul 15 17:09:51 2012 +0100

    backend: Parse the duration message
    
    Instead of calling _get_stream_length() which just does more work.

 src/backend/bacon-video-widget.c |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)
---
diff --git a/src/backend/bacon-video-widget.c b/src/backend/bacon-video-widget.c
index 01db58f..41e4179 100644
--- a/src/backend/bacon-video-widget.c
+++ b/src/backend/bacon-video-widget.c
@@ -2062,10 +2062,14 @@ bvw_bus_message_cb (GstBus * bus, GstMessage * message, BaconVideoWidget *bvw)
     }
 
     case GST_MESSAGE_DURATION: {
-      /* force _get_stream_length() to do new duration query */
-      bvw->priv->stream_length = 0;
-      if (bacon_video_widget_get_stream_length (bvw) == 0) {
-        GST_DEBUG ("Failed to query duration after DURATION message?!");
+      gint64 duration;
+      GstFormat fmt;
+
+      gst_message_parse_duration (message, &fmt, &duration);
+      if (fmt == GST_FORMAT_TIME &&
+	  duration != (gint64) GST_CLOCK_TIME_NONE) {
+	bvw->priv->stream_length = duration / 1000;
+	GST_DEBUG ("got new stream length %" G_GINT64_FORMAT, bvw->priv->stream_length);
       }
       break;
     }